Demountable rim



PETER S. LARSON, OF BELGIT, XVISCONQIN.

ATEN'I OFHCE.

'DEMOUNTABLE RIM.

Speeifieation of Letters Patent.

Patented Jul at, 19:20.

' Application filed June 16,

To all why/t it may concern: 4

'Be it fnown that I, PETER S. LARSON, a citizen of the' United States, residing at city of' Beloit,-in the county of Rock and State oil Wisconsin, have invented certain new and useful Improvements in Dcmountable Rims; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in demountable rims for vehicle wheels.

My principal object is to provide novel means easily and cheaply manufactured, and easily renewed when damaged, for securing a tire-retaining ring on a demountable rim, for receiving inward" thrusts tending to spring the rim, and for guidingthe rim onto the wheel with which it is to be used.

Vith the above object in view, the invention consists of certain novel features of construction and the combination and arrangement of parts as will be more fully, described and claimed.

Figure l of the accompanying drawing is a side elevation of a wheel embodying my invention. I

Fig. 2 is a section taken on the line 22 of Fig. 1.

' Fig. 3 is a section taken on the line 3-3 of Fig. 1.

Fig. 4 is a detail perspective view of the guide block and integral shank.

Similar numerals refer to similar throughout the several views.

The wheel may be of the wire or wooden type, but is illustrated as a wooden wheel of the usual construction, including a hub 1, spokes 2 and telly 3, the telly being adapted to carry an annular metalband 4 on its outerface, said band being secured to the telly by screws or like fasteners 5. The band 4: is provided on one edge with a radial portion or bearing flange 6 whose outer side is disposed in the same plane with the side edge of the folly, the band being of slightly less width than the telly.

Spaced outwardly from the rim 4 is a re movable rim 7, on one edge of which is a tire retaining flange S, the rim 7 being held parts in spaced relation with the band 4 by the radial flange 6 and an inwardly directed portion or bearing flange 9, formed on the edge of the removable rim opposite the tire retaining flange 8, the inner edge of the 1919. Serial H0. 304,610.

bearing flange 9 abutting the adjacent face of the band 4i.

Abutting the edge of the band 4 and the outer side of flange i) is an annular tire retaining plate 15'), whose inner edge abuts the outer face of the-telly 3. The plate 10 and the adjacent flange Share each provided with circumferentially spaced apertures 11 which are alined for the reception of the threaded shanks 12, said shanks being formed integrally with blocks 13, nuts 1.4 being threaded on the ends of said shanks.

The blocks 13 are disposed between the band 4: and rim 7, abut the inner flat face of the flange 0 and are flattened for nonrotating Contact with said rim. T he inner corners are beveled as indicated at 15 to guide the removable rim 7 over the edge of the band 4 when applying the rim to a wheel. Relative movement of the blocks and rim 7 when the rin or plate ill is removed is prevented by studs 16, whichare carried by said rim, and abut the ends of said blocks.

The plate 10 and the bearing flanges 6 and 9 are each provided with circumterentially spaced apertures, preferably though not necessarily four in number, the apertures in the outwardly directed flange 6 being threaded to receive the threaded ends of screws 18 which are 4 passed through the other apertures 19 and between the two annular bands.

When it is desired to remove the tireand rim from the wheel it is only necessary to remove the four screws 18 and pull the removable rim 7 and the plate 10 away from the inner band i which is secured to the telly 3. Should it be necessary to remove the tire from the removable rim 7, the nuts 14 are removed ,from the threaded 'shanks'12 whereupon the plate 10 may be easily separated from said band. Assembling of course is accomplished by reversii'lg the described op eration.

It will be observed that the blocks 13 are of a size to extend substantially half way across the rim '7 and ielly band i, and that they contact with said band and rim. By this arrangement, the blocks 13 not only serve to guide the removable rim 7 onto the wheel, but said blocks cooperate with the flanges 6 and 9 in resisting strains tending to spring the rim inwardly. Attention is further directed to the fact that the blocks or heads 13 and the shanks 12 are integral.

with each other and are formed on a common axis. This permits these parts to be easily and cheaply maimfactured,' for in stance on well known turning or drop-forging machines. Another feature of advantage is that theheads 13 and the shanks 12 are not secured to the rim. This allows easy substitution of new shanks and heads for those previously used, in case threads are s trxiyped or other injury results.

a'rious changes in the form proportion and the minor details of construction may be resorted to Without departing from the principle or sacrificing any of the advantages of the claimed invention.

I claim A demountable rim. having a bead-engag ing flange on one edge and an inwardly extending flange on its other edge, a removable v bead-engaging ring contacting with the outer side of said inwardly extending flange, the two having alined openings, threaded shanks passing through said openings and having cylindrical heads on their inner ends axially aiined with said shanks and abutting said inwardly extending flange, one side of each head being flattened and contacting/ non-rotatably with the rim, the opposite side 01' each head being beveled at its inner end for contact with a telly-band to guide the rim onto a Wheel, nuts threaded on the outer ends of said shanks to hold the aforesaid bead-engaging ring in place, and projections on'the rim bearing against the inner ends of said heads to prevent accidental re- -moval of the shanks from their receiving openings when said nuts are removed.

In testimony whereof I have hereunto set 

